diff options
author | Jonathan Neuschäfer <j.neuschaefer@gmx.net> | 2018-01-22 08:04:09 +0300 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2018-02-12 11:36:06 +0300 |
commit | 4760b6fa442276783aa4294e131b72fea8c5a18a (patch) | |
tree | 4da2b7b139aca2546ec144ccb7f6a9d7b25efb56 /Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt | |
parent | b5cd7802dd7c10c5be388c8820d8e753f4f8fce7 (diff) | |
download | linux-4760b6fa442276783aa4294e131b72fea8c5a18a.tar.xz |
dt-bindings: gpio: Add binding for Wii GPIO controller
The Nintendo Wii game console has a GPIO controller, which is used for
the optical disk slot LED, buttons, poweroff, etc. This patch adds a
binding for this GPIO controller.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt b/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt new file mode 100644 index 000000000000..20fc72d9e61e --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt @@ -0,0 +1,27 @@ +Nintendo Wii (Hollywood) GPIO controller + +Required properties: +- compatible: "nintendo,hollywood-gpio +- reg: Physical base address and length of the controller's registers. +- gpio-controller: Marks the device node as a GPIO controller. +- #gpio-cells: Should be <2>. The first cell is the pin number and the + second cell is used to specify optional parameters: + - bit 0 specifies polarity (0 for normal, 1 for inverted). + +Optional properties: +- ngpios: see Documentation/devicetree/bindings/gpio/gpio.txt +- interrupt-controller: Marks the device node as an interrupt controller. +- #interrupt-cells: Should be two. +- interrupts: Interrupt specifier for the controller's Broadway (PowerPC) + interrupt. +- interrupt-parent: phandle of the parent interrupt controller. + +Example: + + GPIO: gpio@d8000c0 { + #gpio-cells = <2>; + compatible = "nintendo,hollywood-gpio"; + reg = <0x0d8000c0 0x40>; + gpio-controller; + ngpios = <24>; + } |